Thank Paul and Ray
Paul: I have found skippy to be OK for cloud prediction (last night be an exception as it predicted clear skies after about 10pm). Mind you, I have only been using it since mid last year. I generally find it more accurate than the Weatherzone one.
I haven't really looked at its seeing predictions. I was hoping to go out last night if the clouds cleared as it was predicting 8-9 on the seeing scale. Like you said, it probably wouldn't have been that good anyway.